The GPSMAP 1020xs keyed chartplotter/sonar combo has a 10” color SVGA display and comes preloaded with a worldwide basemap. HD-ID, CHIRP and DownVü with CHIRP sonar technology are built-in allowing you the flexibility to choose from several optional transducers.Extreme Sonar Capabilities

The built-in sonar capabilities of the GPSMAP 1020xs gives you the freedom and flexibility to choose from several optional transducers, including traditional, CHIRP and all-in-one HD-ID/DownVü scanning sonar with CHIRP technology. Add a GCV™ 10 black box sonar for both DownVü and SideVü™ scanning sonar with CHIRP technology (sold separately).

When used with a compatible CHIRP transducer (sold separately), GPSMAP 1020xs displays crystal-clear sonar images detailing fishing hot spots, ship wreckage or a diving location. With Garmin CHIRP technology, you get remarkable target separation and resolution at extraordinary depths, and can dial into specific frequencies to target certain species of sport fish. Bottom contours are more visible, even at speed, and signal noise can be suppressed at greater depths to provide a more timely interpretation of what’s below for safer navigation and better fishing.Super-fast 10 Hz GPS/GLONASS

High-sensitivity internal 10 Hz GPS/GLONASS provides position and heading updates 10 times per second. It displays fluid on-screen location and proves to be incredibly accurate when marking 5,000 waypoints and navigating.NMEA 2000® Support

This combo allows you to add more capabilities to your boat. It provides NMEA 2000 support so you can see valuable information on your screen for Garmin autopilot, engine data, SiriusXM® Weather radar and more.

Inland Lakes Vision micro SD card with adapter.Comprehensive coverage of thousands of freshwater lakes throughout the U.S. plus satellite imagery, enhanced 3-D maps, and Auto Guidance technology. Maps are conveniently recorded on a micro SD card for the easy computer-free installation. Compatible with the GPSMAP 4000 -7000 and 400 - 700 series chartplotters.

BlueChart g2 on micro SD card with adapterDetailed offshore BlueChart g2 marine maps to help you navigate — plus enhanced 3-D maps and rich detail and content. Maps are conveniently recorded on a micro SD card for the easy computer-free installation. Compatible with the most chartplotters and handhelds with an SD card slot.

LakeVu HDDisplays points of interests, including docks, designated fishing areas, campgrounds, boat ramps, marinas and bridges. Shows interstates, highways and general roads. Shows underwater features, such as riverbeds, bridges, roads, fish attractors and potential hazards. Offers Safety Shading, which lets you input and shade a minimum depth to help you avoid running aground. Many lakes with many with 1' contours throughout